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Preparation method and application of high molecular weight polyether sulphone polymer with side group containing carboxyl

A high molecular weight, polyaryl ether sulfone technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of low polymer molecular weight, difficulty in obtaining high molecular weight polymers, etc. High molecular weight, excellent mechanical properties, overcoming the effect of low molecular weight

Inactive Publication Date: 2014-09-10
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 1970s, a lot of research has been done on the synthesis, performance and application of this kind of amorphous polymer at home and abroad. It is beneficial to the growth of molecular chains. At present, there are still some shortcomings in the synthesis of polyarylethersulfones containing carboxyl side groups, such as difficulty in obtaining high molecular weight polymers, etc.

Method used

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  • Preparation method and application of high molecular weight polyether sulphone polymer with side group containing carboxyl
  • Preparation method and application of high molecular weight polyether sulphone polymer with side group containing carboxyl
  • Preparation method and application of high molecular weight polyether sulphone polymer with side group containing carboxyl

Examples

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Embodiment 1

[0029]In a four-necked flask with a stirrer, a thermometer, a reflux condensing device, a water separator, and a nitrogen pipe, under the protection of nitrogen, mix 1.4316g of bisphenolic acid, 1.0365g of anhydrous potassium carbonate, and 0.14g of potassium hydroxide . 5mL of toluene, then raised the temperature to 150°C for 2.5h of water separation, after the completion of water separation, raised the temperature to 175°C at a rate of 2min / °C for 18h of polycondensation reaction, collected the precipitate at room temperature and added THF / hydrochloric acid (volume ratio 5: 4) Dilute the mixed solution, add 5 times the volume of the diluted solution with 100°C deionized water for sedimentation, and wash the sediment repeatedly with 100°C deionized water to obtain a nearly white polymer; then dissolve the polymer in tetrahydrofuran to obtain a polymer To the solution, add hot ethanol with 15 times the volume of the polymer solution, stir, filter, collect the filter cake, add ...

Embodiment 2

[0035] In a four-necked flask with a stirrer, a thermometer, a reflux condensing device, a water separator, and a nitrogen pipe, under the protection of nitrogen, mix 1.4316g of bisphenolic acid, 1.0365g of anhydrous potassium carbonate, and 0.14g of potassium hydroxide , 10mL DMSO, 10mL DMAC and 10mL toluene were added to a 100mL reaction flask, reacted at room temperature for 3 hours, raised the temperature to 145°C to start water separation, after the water separation was completed, cooled to room temperature and added 1.4358g 4,4'-dichlorodiphenyl sulfone and 5mL Toluene, then raise the temperature to 150°C for 2.5 hours of water separation, after the completion of water separation, increase the temperature at a rate of 2min / °C to 175°C for 15 hours of polycondensation reaction, collect the precipitate at room temperature and add tetrahydrofuran / hydrochloric acid (5 / 4) to mix Dilute with liquid, add 5 times the volume of the diluent in 100°C deionized water for sedimentatio...

Embodiment 3

[0037] In a four-necked flask with a stirrer, a thermometer, a reflux condensing device, a water separator, and a nitrogen pipe, under the protection of nitrogen, mix 1.4316g of bisphenolic acid, 1.3821g of anhydrous potassium carbonate, and 0.28g of potassium hydroxide , 10mL DMSO, and 10mL DMAC were added to a 250mL reaction flask. After 2.5 hours of reaction at room temperature, 15mL of toluene was added and the temperature was raised to 150°C to start water separation. and 5mL of toluene, and then heated up to 150°C for 2.5h of water separation. After the water separation was completed, the temperature was raised to 175°C at a rate of 2min / °C for 9h of polycondensation reaction. The precipitate was collected at room temperature and added with tetrahydrofuran / hydrochloric acid (5 / 4 ) to dilute the mixed solution, add 5 times the volume of the diluted solution to settle with 100°C deionized water, and the sediment was washed repeatedly with 100°C deionized water to obtain a n...

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Abstract

The invention discloses a high molecular weight polyether sulphone polymer with a side group containing carboxyl and a preparation method of the high molecular weight polyether sulphone polymer with the side group containing the carboxyl. The preparation method comprises the steps that by adopting compound alkali and an inertia double-solvent, solution polycondensation is carried out on 4,4'-dichloro diphenyl sulfone and a diphenolic acid monomer, so that the high molecular weight polyether sulphone polymer with the side group containing the carboxyl is obtained. The high molecular weight polyether sulphone polymer with the side group containing the carboxyl has the advantages that weight-average molecular weight is 1000-150000 and tensile strength is 30-120MPa, and the high molecular weight polyether sulphone polymer with the side group containing the carboxyl has high molecular weight, easy film formation, good mechanical property, good thermal stability and high glass transition temperature; adsorbing capacity of the high molecular weight polyether sulphone polymer with the side group containing the carboxyl to Cu<2+> when pH is 1-7 is 0.02-2mmol / g, the high molecular weight polyether sulphone polymer with the side group containing the carboxyl can be reused after being regenerated, the adsorption rate of the regenerated polymer to Cu<2+> is still more than 90% of the adsorbing capacity of the high molecular weight polyether sulphone polymer with the side group containing the carboxyl to Cu<2+>, and the high molecular weight polyether sulphone polymer with the side group containing the carboxyl can be applied to preparation of a Cu<2+> adsorbing agent and has a broad application prospect in the aspects of water treatment field, membrane separation, fuel cells and the like.

Description

technical field [0001] The invention belongs to the field of engineering macromolecule material science, and relates to a high-molecular weight polyarylether sulfone polymer whose main chain contains ether bonds and sulfone bonds and whose side groups contain carboxyl groups, and a preparation method thereof, and the polymer used in the preparation of Cu 2+ application of adsorbents. Background technique [0002] Polyarylethersulfone (PES) is a high-performance non-crystalline engineering plastic developed by the British ICI company in 1972. It has a high glass transition temperature, high temperature creep resistance, good solvent resistance, and excellent thermal oxidation stability. With many advantages such as good adhesion to metals, it is widely used in the fields of electronics, electrical appliances, machinery, automobiles, medical appliances, and non-stick coatings. [0003] In recent years, scientists at home and abroad have done a lot of research on the modificat...

Claims

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Application Information

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IPC IPC(8): C08G65/48C08G65/40B01J20/26C02F1/28C02F1/62
Inventor 张绍印武兴华王大鸷王爱业曲丰作韩鹏飞
Owner DALIAN POLYTECHNIC UNIVERSITY
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